Merged requested to merge bugfix/zoom_hts_crashes into master
Created by: rishidev
Various improvements to the munge_chr_id subroutine in HTSAdaptor, which were causing a crash on web when zooming in to view BAM/CRAM files.
- changed the call to get a file handle directly from Bio::DB::HTS directly instead of re-using the call to the HTSAdaptors own htsfile open
- We don't need the 1:1 in the region specifier with HTSlib
- calls to $htsfile->close() ; before returning a value
- removed unused ret_id variable